Thanks for big amount of logos. But not all of them really are logos. I think that logo have to have some original graphical element, which can be recognizable without any text.

By the way, there are several very interesting works. Also I like the "investments" word in the logo.

One more thing, I like Deutsche Borse Group logo http://cs405426.vk.me/v405426042/95ff/5T7Z3aouYFk.jpg
And this page is an example of the same logo http://cs405426.vk.me/v405426042/9609/pmd-XOZZXk0.jpg
take a look on it